<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    <common-head></common-head>
  </div>
  <script src="./vue.global.js"></script>
  <script src="./axios.js"></script>
  <script>
    const { createApp, h } = Vue;
    const app = createApp({
    });
    const CommonHead = {
      // render要求返回虚拟dom，生成虚拟dom的是 h函数
      render: () => {
        return h('div', {id: 'box', class: ['a', 'b']}, [
          h('p', {class:'aa'}, ['这是p']),
          h('span',{}, ['这是span']),
          '这是文本内容'
        ])
      }
    }
    app.component('CommonHead', CommonHead)


    app.mount('#app')
  </script>
</body>

</html>